Frequent occurrence of deletions and duplications during somatic hypermutation: Implications for oncogene translocations and heavy chain disease

Abstract excerpt

Human naive and germinal center (GC) B cells were sorted by flow cytometry and rearranged VH region genes were amplified and sequenced from single cells. Whereas no deletions or insertions were found in naive B cells, approximately 4% of in-frame and >40% of out-of-frame rearrangements of GC B cells harbored deletions and/or insertions of variable length. The pattern of deletions/insertions and their restriction...

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